104 lines
2.4 KiB
C++
104 lines
2.4 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1994.
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//
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// File: buketize.hxx
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//
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// Contents: A class to convert windows into a bucket.
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//
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// Classes: CBucketizeWindows
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//
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// History: 2-16-95 srikants Created
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include <query.hxx>
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#include <tablecol.hxx>
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#include <seglist.hxx>
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#include "colcompr.hxx"
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#include "tblwindo.hxx"
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#include "tblbuket.hxx"
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//+---------------------------------------------------------------------------
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//
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// Class: CBucketizeWindows
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//
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// Purpose: A class to convert a window into a bucket.
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//
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// History: 2-17-95 srikants Created
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//
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// Notes:
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//
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//----------------------------------------------------------------------------
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class CMasterColumnSet;
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class CWindowRowIter;
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class CLargeTable;
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class CBucketizeWindows : INHERIT_UNWIND
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{
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INLINE_UNWIND(CBucketizeWindows)
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public:
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CBucketizeWindows( CLargeTable & largeTable, CTableWindow &srcWindow );
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~CBucketizeWindows()
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{
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delete _pBucket;
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}
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void LokCreateBuckets( const CSortSet & sortSet,
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CTableKeyCompare & comparator,
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CColumnMasterSet & colSet
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);
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CTableBucket * AcquireFirst()
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{
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CTableSegment * pTemp = _bktList.RemoveTop();
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if ( 0 != pTemp )
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{
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Win4Assert( pTemp->IsBucket() );
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return (CTableBucket *) pTemp;
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}
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else
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{
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return 0;
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}
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}
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CTableSegList & GetBucketsList() { return _bktList; }
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private:
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//
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// Array of source windows and the count.
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//
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CLargeTable & _largeTable;
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CTableWindow & _srcWindow;
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//
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// Information on the current bucket.
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//
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BOOL _fFirstBkt; // Set to TRUE if this is the first
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// bkt.
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ULONG _cRowsToCopy; // Number of rows to copy from window
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// to the bucket.
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CTableBucket * _pBucket; // Current bucket being filled
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//
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// The target buckets.
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//
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CTableSegList _bktList;
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ULONG _AddWorkIds( CWindowRowIter & iter );
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};
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